冲绳海槽地震海啸的数值试验研究  

Numerical experiment of earthquake tsunami in Okinawa Trough

作　　者：温燕玲[1] 朱元清[2] 宋治平[2] 李伟[2] 刘双庆[2] 

机构地区：[1]中国地震局地球物理研究所,北京100081 [2]上海市地震局,上海200062

出　　处：《地球物理学进展》2008年第2期326-332,共7页Progress in Geophysics

基　　金：国家自然科学基金(40576022);地震科学联合基金(106078)联合资助

摘　　要：在分析东海水深与地震情况基础上,我们认为冲绳海槽地震具有引发海啸的条件,并对该区海啸传播过程采用单侧破裂方式的有限移动源模型和高阶Boussinesq方程做了一维有限差分法数值模拟,给出了海啸传播过程波形和速度变化图.我们从模拟结果得到初步结论:冲绳海槽特大地震海啸传播到上海近海在5小时后,近海波高在几十厘米范围内.We first introduce the geography and geology of East China Sea region, and analyze the probability of earthquake tsunami in Okinawa Trough , then numerically simulating with the finite difference method and discuss the tsunami propagation on East China Sea based on the finite moving source and 1D Boussinesq model. We conclude from the numerical studying that it＇s cost more than 5 hours for Okinawa tsunami propagating near to Shanghai and the wave attenuated to 10＇s cm.

关 键 词：冲绳海槽 地震海啸条件 BOUSSINESQ方程 数值模拟 

分 类 号：P315[天文地球—地震学]